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    • 5. 发明公开
    • POLYPEPTIDE TRANSDUCTION AND FUSOGENIC PEPTIDES
    • 多肽转运和致癌肽
    • EP1732581A2
    • 2006-12-20
    • EP04821562.8
    • 2004-06-18
    • The Regents of The University of California San Diego
    • DOWDY, Stephen, F.WADIA, Jehangir, S.
    • A61K38/00
    • C07K14/43581A61K38/162C07K14/005C07K2319/01C07K2319/10C07K2319/21C12N15/907C12N2740/16322C12N2760/16122C12N2760/16322
    • Due to the barrier imposed by the cell membrane, delivery of macromolecules in excess of 500 Daltons directly into cells remains problematic. However, proteins, which have been evolutionarily selected to perform specific functions, are therefore an attractive therapeutic agent to treat a variety of human diseases. In practice, the direct intracellular delivery of these proteins has, until recently, been difficult to achieve due primarily to the bioavailability barrier of the plasma membrane, which effectively prevents the uptake of the majority of peptides and proteins by limiting their passive entry. However, recent work using small cationic peptides, termed protein transduction domains (PTDs), derived from polynucleotide binding proteins, such as HIV TAT protein or the Drosophila transcription factor Antp. or synthetic poly-Arginine, have now been shown to deliver a myriad of molecules, including synthetic small molecules, peptides and proteins, into animal models in vivo.
    • 由于细胞膜所施加的屏障,将超过500道尔顿的大分子直接递送入细胞仍然存在问题。 然而,进化选择用于执行特定功能的蛋白质因此是治疗各种人类疾病的有吸引力的治疗剂。 实际上,直到最近,这些蛋白质的直接细胞内递送主要是由于质膜的生物利用率屏障而难以实现,其通过限制它们的被动进入而有效地阻止大部分肽和蛋白质的摄取。 然而,最近使用来自多核苷酸结合蛋白(例如HIV TAT蛋白或果蝇转录因子Antp)的称为蛋白质转导结构域(PTD)的小阳离子肽的工作。 或合成的聚精氨酸,现已显示将大量分子(包括合成小分子,肽和蛋白质)递送到体内动物模型中。